Landing page for project EP121

We aim at making the first-ever radio detection of the gaseous environment of a Type Ia supernova (SN Ia), which would shed light on the controversy surrounding the nature of their stellar progenitors. Namely, a radio detection would rule out the broad class of Double-Degenerate scenarios, where two White Dwarfs are involved, thus leaving the Single-Degenerate scenario as the only plausible one leading to an SN Ia. Here, we request up to two 18-hr observing runs per year with the EVN, to trigger up to two optically confirmed, nearby SNe Ia. There is a high competition in this field to be the first team to detect radio emission from an SN Ia. Our team is in a very good position, as we are able to age-date SN Ia to within two days, by combining their brightness with their spectra. The sensitivity currently reachable with the EVN competes with that of the JVLA. In addition, we are not limited by configuration issues, unlike the JVLA. Therefore, the opportunity of making a breakthrough in the field of supernova progenitors should not be missed by the EVN.

This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197